The Dead Air Sierra 5 KM is a dedicated 5.56 suppressor designed for professional, full-auto-rated use and heavy firing schedules. It serves as a compact option for duty, range, and tactical gear setups where durability and consistent performance are priorities. This configuration ships with a KeyMo adapter and a 1/2-28 KeyMo flash hider to enable quick-detach mounting on compatible rifles.
Key Specifications
- The caliber rating is 5.56 NATO / .223 Rem, stated for use with appropriate cartridges and platforms.
- The overall length without adapter measures 4.87 inches as provided by manufacturer specifications.
- The unit ships with a KeyMo adapter and includes a 1/2-28 KeyMo flash hider for quick-detach mounting.
- The suppressor body diameter is listed as 1.50 inches for compact handling and fitment considerations.
- The internal baffles are described as welded Stellite with an outer stainless steel tube for durability under heavy use.
- The product is stated to be full-auto rated with no barrel length restrictions in manufacturer material.
- Manufacturer-provided weight is listed as 10.8 ounces (no adapter) and 15.4 ounces (with KeyMo adapter) in product documentation.
- The thread pattern for the included flash hider is 1/2-28, matching common 5.56 rifle threads.
The Sierra 5 KM emphasizes durability and straightforward function, using a proven baffle material and stainless outer construction to withstand demanding use. Its compact profile and quick-detach KeyMo interface make it suitable for users who require a hard-use suppressor for range, duty, or tactical gear setups. Built to prioritize service life and modularity, it is a practical choice for operators and informed shooters who value rugged, reliable components.
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